考虑电-碳-氢耦合的多综合能源微网-配电网分布式优化运行
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三峡大学

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TM732;TN702

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国家自然科学基金项目(面上项目,重点项目,重大项目)


Considering the Electricity-Carbon-Hydrogen Coupling, the Multi-Integrated Energy Microgrid Connected to the Distributed Optimal Operation of the Distribution Network
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    摘要:

    为了充分发掘综合能源微网(integrated energy microgrid, IEM)的调度潜力,促进新型电力系统转型,提出了多综合能源微网接入配电网的协同分布式优化运行方法。首先,构建考虑了碳捕集系统(carbon capture system,CCS)和两阶段电转气装置(power to gas,P2G)的IEM模型,构架了包括掺氢热电联产机组(combined heat and power, CHP),氢燃料电池(fuel cell,FC)和储氢的氢能的多类型应用,形成电-碳-氢耦合的综合能源微网,减少碳排放和充分挖掘碳捕集装置和氢能的调度潜力。然后,在单微网模型构建之后,针对多综合能源微网接入配电网问题,将综合能源微网和配电网看作不同子区,建立多综合能源微网接入配点网的分布式优化运行模型。并采用自适应步长的交替方向乘子法(alternative direction method of multipliers, ADMM)求解模型。最后,基于改进型IEEE33节点配电网的仿真测算表明,考虑电-碳-氢耦合的多IEM接入配网系统后系统调度成本减少了10%,碳排放减少了约65%,且采用分布式优化所得结果与集中式差距仅为0.8%,验证了所提方法的有效性和优越性。 关键词:综合能源微网;碳捕集;分布式优化;电碳氢耦合;交替方向乘子法

    Abstract:

    In order to fully explore the dispatching potential of integrated energy microgrid (IEM) and promote the transformation of new power system, a collaborative distributed optimal operation method of multi-integrated energy microgrid access to distribution network is proposed. Firstly, an IEM model considering carbon capture and two-stage power-to-gas devices is constructed, and multiple types of hydrogen energy applications including hydrogen-doped gas turbines and hydrogen fuel cells are constructed to jointly reduce carbon emissions and fully tap the dispatching potential of carbon capture devices and hydrogen energy. Then, in view of the problem of multi-integrated energy microgrid access to the distribution network, the integrated energy microgrid and the distribution network are regarded as different sub-regions, and the distributed optimal operation model of multi-integrated energy microgrid access distribution network is established. The alternative direction method of multipliers (ADMM) was used to solve the model. Finally, the simulation results based on the improved IEEE33-node distribution network show that the system scheduling cost is reduced by 10% and the carbon emission is reduced by about 65% after the multi-IEM access distribution network system considering the electricity-carbon-hydrogen coupling, and the difference between the results obtained by distributed optimization and the centralized one is only 0.8%, which verifies the effectiveness and superiority of the proposed method.

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  • 收稿日期:2024-10-12
  • 最后修改日期:2024-11-07
  • 录用日期:2024-11-08
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